There has been quite a few queries on Liferay OpenPortal WSRP integration, Here are some notes in addition to the below blog entries.

• Setting up a WSRP Producer in Liferay
• OpenPortal WSRP Consumer in Liferay
  

1. OpenPortal WSRP is now moved to liferay plugins under wsrp-portlet directory - Yes this is the case even in Liferay 5.2 and in all future versions.
2. The WSRP Administrative interface ( Producer and Consumer admin  portlets ) will appear in the "Control Panel" if the WSRP Portlet plugin is deployed successfully.
3. The OpenPortal WSRP has dependency on the Metro stack, Hence deploying it on application servers other than glassfish or tomcat may conflict with the applications servers webservices stack. The above plugin is tested and recommended to be deployed over glassfish or tomcat liferay distribution.
4. Make sure that you set portlet.container.impl=sun in portal-ext.properties as mentioned in the above blog.